MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Power Plant knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which is the main ore of thorium? |
| A. | Magnetite |
| B. | Monazite Sand |
| C. | Pitchblende |
| D. | None of the mentioned |
| Answer» C. Pitchblende | |
| 2. |
Fast breeder reactors are most usable in India, because of our largest __________ deposits. |
| A. | Uranium |
| B. | Plutonium |
| C. | Thorium |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 3. |
The half-life period of a radioactive element is 100 days. After 400 days, one gm of the element will be reduced to __________ gm. |
| A. | 1/2 |
| B. | 1/4 |
| C. | 1/8 |
| D. | 1/16 |
| Answer» E. | |
| 4. |
U-235 content in enriched uranium, that is normally used in power reactors (e.g., at Tarapur atomic power plant), is about __________ percent. |
| A. | 50 |
| B. | 3 |
| C. | 85 |
| D. | 97 |
| Answer» C. 85 | |
| 5. |
A radioactive isotope undergoes decay with respect to time following __________ law. |
| A. | logarithmic |
| B. | exponential |
| C. | inverse square |
| D. | linear |
| Answer» C. inverse square | |
| 6. |
A fast breeder reactor employs __________ |
| A. | U-235 as a fuel |
| B. | water as a coolant |
| C. | graphite as a moderator |
| D. | none of the mentioned |
| Answer» B. water as a coolant | |
| 7. |
Graphite is used in nuclear reactor as __________ |
| A. | lubricant |
| B. | fuel |
| C. | retarder of neutron velocity |
| D. | insulation lining of the reactor |
| Answer» D. insulation lining of the reactor | |
| 8. |
Uranium ore is currently mined & concentrated at __________ |
| A. | Khetri |
| B. | Alwaye |
| C. | Ghatsilla |
| D. | Jadugoda |
| Answer» E. | |
| 9. |
Percentage of U-238 in natural uranium is around __________ |
| A. | 29.71 |
| B. | 99.29 |
| C. | 0.015 |
| D. | 0.71 |
| Answer» D. 0.71 | |
| 10. |
The half-life period of a radioactive substance is best determined by counting the number of alpha particles emitted per second in a Geiger Muller counter from its known quantity. If the half-life period of a radioactive substance is one month, then? |
| A. | it will completely disintegrate in two months |
| B. | l/8th of it will remain intact at the end of four months |
| C. | 3/4th of it will disintegrate in two months |
| D. | it will completely disintegrate in four months |
| Answer» B. l/8th of it will remain intact at the end of four months | |
| 11. |
Atoms with same number of neutrons, but different number of nucleons are called __________ |
| A. | Isobars |
| B. | Isotones |
| C. | Isotopes |
| D. | Isoters |
| Answer» C. Isotopes | |
| 12. |
__________ have the same mass number, but different nuclear charge. |
| A. | Isotones |
| B. | Isobars |
| C. | Isotopes |
| D. | Isoemtropic |
| Answer» C. Isotopes | |
| 13. |
Fast breeder nuclear reactors using enriched uranium as fuel may contain upto a maximum of __________ percent of U-235 (i.e. fissile material). |
| A. | 15 |
| B. | 45 |
| C. | 65 |
| D. | 85 |
| Answer» E. | |